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Material of stainless steel tubes for power station boilers
Source:Xinsteel   Date:2020-04-09
Material grades of stainless steel pipes for power station boilers: SA-213TP304H, 1Cr18Ni9, 06Cr10Ni10, SA-213TP347H, 1CR19Ni11NB
SA-213TP347H 1Cr19Ni11Nb
It is austenitic heat-strength steel stabilized with niobium. It has good thermal strength and intergranular corrosion resistance, good welding performance, and good corrosion resistance in alkali, seawater and various acids. Application: Used in large boiler superheater tubes, reheater tubes, steam pipes and heat exchangers in petrochemical industry. The allowable antioxidant temperature in boiler tubes is 750 ° C.
ASME SA-213M; GB / T5310-95
φ50 ~ φ240mm
1. Has good resistance to intergranular corrosion and oxidation resistance.
2. Has good bending pipe and welding process performance.
3. The maximum working temperature can reach 650 ℃. For the anti-oxidation parts, the maximum anti-oxidation service temperature can reach 850 ℃.
It is mainly used for large-scale power generation boilers with subcritical and supercritical pressure parameters, high-temperature superheaters, high-temperature recrystallizers, high-temperature sections of panel superheaters and various high-temperature and high-pressure pipe fittings for power plant boilers.